1 files changed, 0 insertions, 2175 deletions

diff --git a/src/SQLite/lsqlite3.c b/src/SQLite/lsqlite3.c
deleted file mode 100644
index 4c81b5878..000000000
--- a/src/SQLite/lsqlite3.c
+++ /dev/null
@@ -1,2175 +0,0 @@
-/************************************************************************
-* lsqlite3                                                              *
-* Copyright (C) 2002-2013 Tiago Dionizio, Doug Currie                   *
-* All rights reserved.                                                  *
-* Author    : Tiago Dionizio <tiago.dionizio@ist.utl.pt>                *
-* Author    : Doug Currie <doug.currie@alum.mit.edu>                    *
-* Library   : lsqlite3 - a SQLite 3 database binding for Lua 5          *
-*                                                                       *
-* Permission is hereby granted, free of charge, to any person obtaining *
-* a copy of this software and associated documentation files (the       *
-* "Software"), to deal in the Software without restriction, including   *
-* without limitation the rights to use, copy, modify, merge, publish,   *
-* distribute, sublicense, and/or sell copies of the Software, and to    *
-* permit persons to whom the Software is furnished to do so, subject to *
-* the following conditions:                                             *
-*                                                                       *
-* The above copyright notice and this permission notice shall be        *
-* included in all copies or substantial portions of the Software.       *
-*                                                                       *
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       *
-* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    *
-* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*
-* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  *
-* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  *
-* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     *
-* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                *
-************************************************************************/
-// Slightly modified by _Xoft to compile in MSVC
-
-
-
-
-// 2013_04_07 _X: Added the following #define-s so that MSVC doesn't complain about non-secure stuff:
-#define _CRT_SECURE_NO_WARNINGS
-#ifdef __cplusplus
-extern "C" {
-#endif  // __cplusplus
-
-
-
-
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#define LUA_LIB
-#include "lua.h"
-#include "lauxlib.h"
-
-#if LUA_VERSION_NUM > 501
-//
-// Lua 5.2
-//
-#define lua_strlen lua_rawlen
-// luaL_typerror always used with arg at ndx == NULL
-#define luaL_typerror(L,ndx,str) luaL_error(L,"bad argument %d (%s expected, got nil)",ndx,str)
-// luaL_register used once, so below expansion is OK for this case
-#define luaL_register(L,name,reg) lua_newtable(L);luaL_setfuncs(L,reg,0)
-// luaL_openlib always used with name == NULL
-#define luaL_openlib(L,name,reg,nup) luaL_setfuncs(L,reg,nup)
-#endif
-
-#include "sqlite3.h"
-
-/* compile time features */
-#if !defined(SQLITE_OMIT_PROGRESS_CALLBACK)
-    #define SQLITE_OMIT_PROGRESS_CALLBACK 0
-#endif
-#if !defined(LSQLITE_OMIT_UPDATE_HOOK)
-    #define LSQLITE_OMIT_UPDATE_HOOK 0
-#endif
-
-typedef struct sdb sdb;
-typedef struct sdb_vm sdb_vm;
-typedef struct sdb_func sdb_func;
-
-/* to use as C user data so i know what function sqlite is calling */
-struct sdb_func {
-    /* references to associated lua values */
-    int fn_step;
-    int fn_finalize;
-    int udata;
-
-    sdb *db;
-    char aggregate;
-
-    sdb_func *next;
-};
-
-/* information about database */
-struct sdb {
-    /* associated lua state */
-    lua_State *L;
-    /* sqlite database handle */
-    sqlite3 *db;
-
-    /* sql functions stack usage */
-    sdb_func *func;         /* top SQL function being called */
-
-    /* references */
-    int busy_cb;        /* busy callback */
-    int busy_udata;
-
-    int progress_cb;    /* progress handler */
-    int progress_udata;
-
-    int trace_cb;       /* trace callback */
-    int trace_udata;
-
-#if !defined(LSQLITE_OMIT_UPDATE_HOOK) || !LSQLITE_OMIT_UPDATE_HOOK
-
-    int update_hook_cb; /* update_hook callback */
-    int update_hook_udata;
-
-    int commit_hook_cb; /* commit_hook callback */
-    int commit_hook_udata;
-
-    int rollback_hook_cb; /* rollback_hook callback */
-    int rollback_hook_udata;
-
-#endif
-};
-
-static const char *sqlite_meta      = ":sqlite3";
-static const char *sqlite_vm_meta   = ":sqlite3:vm";
-static const char *sqlite_ctx_meta  = ":sqlite3:ctx";
-static int sqlite_ctx_meta_ref;
-
-/*
-** =======================================================
-** Database Virtual Machine Operations
-** =======================================================
-*/
-
-static void vm_push_column(lua_State *L, sqlite3_stmt *vm, int idx) {
-    switch (sqlite3_column_type(vm, idx)) {
-        case SQLITE_INTEGER:
-            {
-                sqlite_int64 i64 = sqlite3_column_int64(vm, idx);
-                lua_Number n = (lua_Number)i64;
-                if (n == i64)
-                    lua_pushnumber(L, n);
-                else
-                    lua_pushlstring(L, (const char*)sqlite3_column_text(vm, idx), sqlite3_column_bytes(vm, idx));
-            }
-            break;
-        case SQLITE_FLOAT:
-            lua_pushnumber(L, sqlite3_column_double(vm, idx));
-            break;
-        case SQLITE_TEXT:
-            lua_pushlstring(L, (const char*)sqlite3_column_text(vm, idx), sqlite3_column_bytes(vm, idx));
-            break;
-        case SQLITE_BLOB:
-            lua_pushlstring(L, sqlite3_column_blob(vm, idx), sqlite3_column_bytes(vm, idx));
-            break;
-        case SQLITE_NULL:
-            lua_pushnil(L);
-            break;
-        default:
-            lua_pushnil(L);
-            break;
-    }
-}
-
-/* virtual machine information */
-struct sdb_vm {
-    sdb *db;                /* associated database handle */
-    sqlite3_stmt *vm;       /* virtual machine */
-
-    /* sqlite3_step info */
-    int columns;            /* number of columns in result */
-    char has_values;        /* true when step succeeds */
-
-    char temp;              /* temporary vm used in db:rows */
-};
-
-/* called with sql text on the lua stack */
-static sdb_vm *newvm(lua_State *L, sdb *db) {
-    sdb_vm *svm = (sdb_vm*)lua_newuserdata(L, sizeof(sdb_vm));
-
-    luaL_getmetatable(L, sqlite_vm_meta);
-    lua_setmetatable(L, -2);        /* set metatable */
-
-    svm->db = db;
-    svm->columns = 0;
-    svm->has_values = 0;
-    svm->vm = NULL;
-    svm->temp = 0;
-
-    /* add an entry on the database table: svm -> sql text */
-    lua_pushlightuserdata(L, db);
-    lua_rawget(L, LUA_REGISTRYINDEX);
-    lua_pushlightuserdata(L, svm);
-    lua_pushvalue(L, -4); /* the sql text */
-    lua_rawset(L, -3);
-    lua_pop(L, 1);
-
-    return svm;
-}
-
-static int cleanupvm(lua_State *L, sdb_vm *svm) {
-    /* remove entry in database table - no harm if not present in the table */
-    lua_pushlightuserdata(L, svm->db);
-    lua_rawget(L, LUA_REGISTRYINDEX);
-    lua_pushlightuserdata(L, svm);
-    lua_pushnil(L);
-    lua_rawset(L, -3);
-    lua_pop(L, 1);
-
-    svm->columns = 0;
-    svm->has_values = 0;
-
-    if (!svm->vm) return 0;
-
-    lua_pushnumber(L, sqlite3_finalize(svm->vm));
-    svm->vm = NULL;
-    return 1;
-}
-
-static int stepvm(lua_State *L, sdb_vm *svm) {
-    int result;
-    int loop_limit = 3;
-    while ( loop_limit-- ) {
-        result = sqlite3_step(svm->vm);
-        if ( result==SQLITE_ERROR ) {
-          result = sqlite3_reset (svm->vm);
-        }
-        if ( result==SQLITE_SCHEMA ) {
-            sqlite3_stmt *vn;
-            const char *sql;
-            /* recover sql text */
-            lua_pushlightuserdata(L, svm->db);
-            lua_rawget(L, LUA_REGISTRYINDEX);
-            lua_pushlightuserdata(L, svm);
-            lua_rawget(L, -2); /* sql text */
-            sql = luaL_checkstring(L, -1);
-            /* re-prepare */
-            result = sqlite3_prepare(svm->db->db, sql, -1, &vn, NULL);
-            if (result != SQLITE_OK) break;
-            sqlite3_transfer_bindings(svm->vm, vn);
-            sqlite3_finalize(svm->vm);
-            svm->vm = vn;
-            lua_pop(L,2);
-        } else {
-          break;
-        }
-    }
-    return result;
-}
-
-static sdb_vm *lsqlite_getvm(lua_State *L, int index) {
-    sdb_vm *svm = (sdb_vm*)luaL_checkudata(L, index, sqlite_vm_meta);
-    if (svm == NULL) luaL_argerror(L, index, "bad sqlite virtual machine");
-    return svm;
-}
-
-static sdb_vm *lsqlite_checkvm(lua_State *L, int index) {
-    sdb_vm *svm = lsqlite_getvm(L, index);
-    if (svm->vm == NULL) luaL_argerror(L, index, "attempt to use closed sqlite virtual machine");
-    return svm;
-}
-
-static int dbvm_isopen(lua_State *L) {
-    sdb_vm *svm = lsqlite_getvm(L, 1);
-    lua_pushboolean(L, svm->vm != NULL ? 1 : 0);
-    return 1;
-}
-
-static int dbvm_tostring(lua_State *L) {
-    char buff[39];
-    sdb_vm *svm = lsqlite_getvm(L, 1);
-    if (svm->vm == NULL)
-        strcpy(buff, "closed");
-    else
-        sprintf(buff, "%p", svm);
-    lua_pushfstring(L, "sqlite virtual machine (%s)", buff);
-    return 1;
-}
-
-static int dbvm_gc(lua_State *L) {
-    sdb_vm *svm = lsqlite_getvm(L, 1);
-    if (svm->vm != NULL)  /* ignore closed vms */
-        cleanupvm(L, svm);
-    return 0;
-}
-
-static int dbvm_step(lua_State *L) {
-    int result;
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-
-    result = stepvm(L, svm);
-    svm->has_values = result == SQLITE_ROW ? 1 : 0;
-    svm->columns = sqlite3_data_count(svm->vm);
-
-    lua_pushnumber(L, result);
-    return 1;
-}
-
-static int dbvm_finalize(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    return cleanupvm(L, svm);
-}
-
-static int dbvm_reset(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_reset(svm->vm);
-    lua_pushnumber(L, sqlite3_errcode(svm->db->db));
-    return 1;
-}
-
-static void dbvm_check_contents(lua_State *L, sdb_vm *svm) {
-    if (!svm->has_values) {
-        luaL_error(L, "misuse of function");
-    }
-}
-
-static void dbvm_check_index(lua_State *L, sdb_vm *svm, int index) {
-    if (index < 0 || index >= svm->columns) {
-        luaL_error(L, "index out of range [0..%d]", svm->columns - 1);
-    }
-}
-
-static void dbvm_check_bind_index(lua_State *L, sdb_vm *svm, int index) {
-    if (index < 1 || index > sqlite3_bind_parameter_count(svm->vm)) {
-        luaL_error(L, "bind index out of range [1..%d]", sqlite3_bind_parameter_count(svm->vm));
-    }
-}
-
-/*
-** =======================================================
-** Virtual Machine - generic info
-** =======================================================
-*/
-static int dbvm_columns(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    lua_pushnumber(L, sqlite3_column_count(svm->vm));
-    return 1;
-}
-
-/*
-** =======================================================
-** Virtual Machine - getters
-** =======================================================
-*/
-
-static int dbvm_get_value(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    int index = luaL_checkint(L, 2);
-    dbvm_check_contents(L, svm);
-    dbvm_check_index(L, svm, index);
-    vm_push_column(L, svm->vm, index);
-    return 1;
-}
-
-static int dbvm_get_name(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    int index = (int)luaL_checknumber(L, 2);
-    dbvm_check_index(L, svm, index);
-    lua_pushstring(L, sqlite3_column_name(svm->vm, index));
-    return 1;
-}
-
-static int dbvm_get_type(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    int index = (int)luaL_checknumber(L, 2);
-    dbvm_check_index(L, svm, index);
-    lua_pushstring(L, sqlite3_column_decltype(svm->vm, index));
-    return 1;
-}
-
-static int dbvm_get_values(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int columns = svm->columns;
-    int n;
-    dbvm_check_contents(L, svm);
-
-    lua_newtable(L);
-    for (n = 0; n < columns;) {
-        vm_push_column(L, vm, n++);
-        lua_rawseti(L, -2, n);
-    }
-    return 1;
-}
-
-static int dbvm_get_names(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int columns = sqlite3_column_count(vm); /* valid as soon as statement prepared */
-    int n;
-
-    lua_newtable(L);
-    for (n = 0; n < columns;) {
-        lua_pushstring(L, sqlite3_column_name(vm, n++));
-        lua_rawseti(L, -2, n);
-    }
-    return 1;
-}
-
-static int dbvm_get_types(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int columns = sqlite3_column_count(vm); /* valid as soon as statement prepared */
-    int n;
-
-    lua_newtable(L);
-    for (n = 0; n < columns;) {
-        lua_pushstring(L, sqlite3_column_decltype(vm, n++));
-        lua_rawseti(L, -2, n);
-    }
-    return 1;
-}
-
-static int dbvm_get_uvalues(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int columns = svm->columns;
-    int n;
-    dbvm_check_contents(L, svm);
-
-    lua_checkstack(L, columns);
-    for (n = 0; n < columns; ++n)
-        vm_push_column(L, vm, n);
-    return columns;
-}
-
-static int dbvm_get_unames(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int columns = sqlite3_column_count(vm); /* valid as soon as statement prepared */
-    int n;
-
-    lua_checkstack(L, columns);
-    for (n = 0; n < columns; ++n)
-        lua_pushstring(L, sqlite3_column_name(vm, n));
-    return columns;
-}
-
-static int dbvm_get_utypes(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int columns = sqlite3_column_count(vm); /* valid as soon as statement prepared */
-    int n;
-
-    lua_checkstack(L, columns);
-    for (n = 0; n < columns; ++n)
-        lua_pushstring(L, sqlite3_column_decltype(vm, n));
-    return columns;
-}
-
-static int dbvm_get_named_values(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int columns = svm->columns;
-    int n;
-    dbvm_check_contents(L, svm);
-
-    lua_newtable(L);
-    for (n = 0; n < columns; ++n) {
-        lua_pushstring(L, sqlite3_column_name(vm, n));
-        vm_push_column(L, vm, n);
-        lua_rawset(L, -3);
-    }
-    return 1;
-}
-
-static int dbvm_get_named_types(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int columns = sqlite3_column_count(vm);
-    int n;
-
-    lua_newtable(L);
-    for (n = 0; n < columns; ++n) {
-        lua_pushstring(L, sqlite3_column_name(vm, n));
-        lua_pushstring(L, sqlite3_column_decltype(vm, n));
-        lua_rawset(L, -3);
-    }
-    return 1;
-}
-
-/*
-** =======================================================
-** Virtual Machine - Bind
-** =======================================================
-*/
-
-static int dbvm_bind_index(lua_State *L, sqlite3_stmt *vm, int index, int lindex) {
-    switch (lua_type(L, lindex)) {
-        case LUA_TSTRING:
-            return sqlite3_bind_text(vm, index, lua_tostring(L, lindex), lua_strlen(L, lindex), SQLITE_TRANSIENT);
-        case LUA_TNUMBER:
-            return sqlite3_bind_double(vm, index, lua_tonumber(L, lindex));
-        case LUA_TBOOLEAN:
-            return sqlite3_bind_int(vm, index, lua_toboolean(L, lindex) ? 1 : 0);
-        case LUA_TNONE:
-        case LUA_TNIL:
-            return sqlite3_bind_null(vm, index);
-        default:
-            luaL_error(L, "index (%d) - invalid data type for bind (%s)", index, lua_typename(L, lua_type(L, lindex)));
-            return SQLITE_MISUSE; /*!*/
-    }
-}
-
-
-static int dbvm_bind_parameter_count(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    lua_pushnumber(L, sqlite3_bind_parameter_count(svm->vm));
-    return 1;
-}
-
-static int dbvm_bind_parameter_name(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    int index = (int)luaL_checknumber(L, 2);
-    dbvm_check_bind_index(L, svm, index);
-    lua_pushstring(L, sqlite3_bind_parameter_name(svm->vm, index));
-    return 1;
-}
-
-static int dbvm_bind(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int index = luaL_checkint(L, 2);
-    int result;
-
-    dbvm_check_bind_index(L, svm, index);
-    result = dbvm_bind_index(L, vm, index, 3);
-
-    lua_pushnumber(L, result);
-    return 1;
-}
-
-static int dbvm_bind_blob(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    int index = luaL_checkint(L, 2);
-    const char *value = luaL_checkstring(L, 3);
-    int len = lua_strlen(L, 3);
-
-    lua_pushnumber(L, sqlite3_bind_blob(svm->vm, index, value, len, SQLITE_TRANSIENT));
-    return 1;
-}
-
-static int dbvm_bind_values(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int top = lua_gettop(L);
-    int result, n;
-
-    if (top - 1 != sqlite3_bind_parameter_count(vm))
-        luaL_error(L,
-            "incorrect number of parameters to bind (%d given, %d to bind)",
-            top - 1,
-            sqlite3_bind_parameter_count(vm)
-        );
-
-    for (n = 2; n <= top; ++n) {
-        if ((result = dbvm_bind_index(L, vm, n - 1, n)) != SQLITE_OK) {
-            lua_pushnumber(L, result);
-            return 1;
-        }
-    }
-
-    lua_pushnumber(L, SQLITE_OK);
-    return 1;
-}
-
-static int dbvm_bind_names(lua_State *L) {
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm = svm->vm;
-    int count = sqlite3_bind_parameter_count(vm);
-    const char *name;
-    int result, n;
-    luaL_checktype(L, 2, LUA_TTABLE);
-
-    for (n = 1; n <= count; ++n) {
-        name = sqlite3_bind_parameter_name(vm, n);
-        if (name && (name[0] == ':' || name[0] == '$')) {
-            lua_pushstring(L, ++name);
-            lua_gettable(L, 2);
-            result = dbvm_bind_index(L, vm, n, -1);
-            lua_pop(L, 1);
-        }
-        else {
-            lua_pushnumber(L, n);
-            lua_gettable(L, 2);
-            result = dbvm_bind_index(L, vm, n, -1);
-            lua_pop(L, 1);
-        }
-
-        if (result != SQLITE_OK) {
-            lua_pushnumber(L, result);
-            return 1;
-        }
-    }
-
-    lua_pushnumber(L, SQLITE_OK);
-    return 1;
-}
-
-/*
-** =======================================================
-** Database (internal management)
-** =======================================================
-*/
-
-/*
-** When creating database handles, always creates a `closed' database handle
-** before opening the actual database; so, if there is a memory error, the
-** database is not left opened.
-**
-** Creates a new 'table' and leaves it in the stack
-*/
-static sdb *newdb (lua_State *L) {
-    sdb *db = (sdb*)lua_newuserdata(L, sizeof(sdb));
-    db->L = L;
-    db->db = NULL;  /* database handle is currently `closed' */
-    db->func = NULL;
-
-    db->busy_cb =
-    db->busy_udata =
-    db->progress_cb =
-    db->progress_udata =
-    db->trace_cb =
-    db->trace_udata = 
-#if !defined(LSQLITE_OMIT_UPDATE_HOOK) || !LSQLITE_OMIT_UPDATE_HOOK
-    db->update_hook_cb =
-    db->update_hook_udata =
-    db->commit_hook_cb =
-    db->commit_hook_udata =
-    db->rollback_hook_cb =
-    db->rollback_hook_udata =
-#endif
-     LUA_NOREF;
-
-    luaL_getmetatable(L, sqlite_meta);
-    lua_setmetatable(L, -2);        /* set metatable */
-
-    /* to keep track of 'open' virtual machines */
-    lua_pushlightuserdata(L, db);
-    lua_newtable(L);
-    lua_rawset(L, LUA_REGISTRYINDEX);
-
-    return db;
-}
-
-static int cleanupdb(lua_State *L, sdb *db) {
-    sdb_func *func;
-    sdb_func *func_next;
-    int top;
-    int result;
-
-    /* free associated virtual machines */
-    lua_pushlightuserdata(L, db);
-    lua_rawget(L, LUA_REGISTRYINDEX);
-
-    /* close all used handles */
-    top = lua_gettop(L);
-    lua_pushnil(L);
-    while (lua_next(L, -2)) {
-        sdb_vm *svm = lua_touserdata(L, -2); /* key: vm; val: sql text */
-        cleanupvm(L, svm);
-
-        lua_settop(L, top);
-        lua_pushnil(L);
-    }
-
-    lua_pop(L, 1); /* pop vm table */
-
-    /* remove entry in lua registry table */
-    lua_pushlightuserdata(L, db);
-    lua_pushnil(L);
-    lua_rawset(L, LUA_REGISTRYINDEX);
-
-    /* 'free' all references */
-    luaL_unref(L, LUA_REGISTRYINDEX, db->busy_cb);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->busy_udata);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->progress_cb);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->progress_udata);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->trace_cb);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->trace_udata);
-#if !defined(LSQLITE_OMIT_UPDATE_HOOK) || !LSQLITE_OMIT_UPDATE_HOOK
-    luaL_unref(L, LUA_REGISTRYINDEX, db->update_hook_cb);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->update_hook_udata);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->commit_hook_cb);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->commit_hook_udata);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->rollback_hook_cb);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->rollback_hook_udata);
-#endif
-
-    /* close database */
-    result = sqlite3_close(db->db);
-    db->db = NULL;
-
-    /* free associated memory with created functions */
-    func = db->func;
-    while (func) {
-        func_next = func->next;
-        luaL_unref(L, LUA_REGISTRYINDEX, func->fn_step);
-        luaL_unref(L, LUA_REGISTRYINDEX, func->fn_finalize);
-        luaL_unref(L, LUA_REGISTRYINDEX, func->udata);
-        free(func);
-        func = func_next;
-    }
-    db->func = NULL;
-    return result;
-}
-
-static sdb *lsqlite_getdb(lua_State *L, int index) {
-    sdb *db = (sdb*)luaL_checkudata(L, index, sqlite_meta);
-    if (db == NULL) luaL_typerror(L, index, "sqlite database");
-    return db;
-}
-
-static sdb *lsqlite_checkdb(lua_State *L, int index) {
-    sdb *db = lsqlite_getdb(L, index);
-    if (db->db == NULL) luaL_argerror(L, index, "attempt to use closed sqlite database");
-    return db;
-}
-
-
-/*
-** =======================================================
-** User Defined Functions - Context Methods
-** =======================================================
-*/
-typedef struct {
-    sqlite3_context *ctx;
-    int ud;
-} lcontext;
-
-static lcontext *lsqlite_make_context(lua_State *L) {
-    lcontext *ctx = (lcontext*)lua_newuserdata(L, sizeof(lcontext));
-    lua_rawgeti(L, LUA_REGISTRYINDEX, sqlite_ctx_meta_ref);
-    lua_setmetatable(L, -2);
-    ctx->ctx = NULL;
-    ctx->ud = LUA_NOREF;
-    return ctx;
-}
-
-static lcontext *lsqlite_getcontext(lua_State *L, int index) {
-    lcontext *ctx = (lcontext*)luaL_checkudata(L, index, sqlite_ctx_meta);
-    if (ctx == NULL) luaL_typerror(L, index, "sqlite context");
-    return ctx;
-}
-
-static lcontext *lsqlite_checkcontext(lua_State *L, int index) {
-    lcontext *ctx = lsqlite_getcontext(L, index);
-    if (ctx->ctx == NULL) luaL_argerror(L, index, "invalid sqlite context");
-    return ctx;
-}
-
-static int lcontext_tostring(lua_State *L) {
-    char buff[39];
-    lcontext *ctx = lsqlite_getcontext(L, 1);
-    if (ctx->ctx == NULL)
-        strcpy(buff, "closed");
-    else
-        sprintf(buff, "%p", ctx->ctx);
-    lua_pushfstring(L, "sqlite function context (%s)", buff);
-    return 1;
-}
-
-static void lcontext_check_aggregate(lua_State *L, lcontext *ctx) {
-    sdb_func *func = (sdb_func*)sqlite3_user_data(ctx->ctx);
-    if (!func->aggregate) {
-        luaL_error(L, "attempt to call aggregate method from scalar function");
-    }
-}
-
-static int lcontext_user_data(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    sdb_func *func = (sdb_func*)sqlite3_user_data(ctx->ctx);
-    lua_rawgeti(L, LUA_REGISTRYINDEX, func->udata);
-    return 1;
-}
-
-static int lcontext_get_aggregate_context(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    lcontext_check_aggregate(L, ctx);
-    lua_rawgeti(L, LUA_REGISTRYINDEX, ctx->ud);
-    return 1;
-}
-
-static int lcontext_set_aggregate_context(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    lcontext_check_aggregate(L, ctx);
-    lua_settop(L, 2);
-    luaL_unref(L, LUA_REGISTRYINDEX, ctx->ud);
-    ctx->ud = luaL_ref(L, LUA_REGISTRYINDEX);
-    return 0;
-}
-
-static int lcontext_aggregate_count(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    lcontext_check_aggregate(L, ctx);
-    lua_pushnumber(L, sqlite3_aggregate_count(ctx->ctx));
-    return 1;
-}
-
-#if 0
-void *sqlite3_get_auxdata(sqlite3_context*, int);
-void sqlite3_set_auxdata(sqlite3_context*, int, void*, void (*)(void*));
-#endif
-
-static int lcontext_result(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    switch (lua_type(L, 2)) {
-        case LUA_TNUMBER:
-            sqlite3_result_double(ctx->ctx, luaL_checknumber(L, 2));
-            break;
-        case LUA_TSTRING:
-            sqlite3_result_text(ctx->ctx, luaL_checkstring(L, 2), lua_strlen(L, 2), SQLITE_TRANSIENT);
-            break;
-        case LUA_TNIL:
-        case LUA_TNONE:
-            sqlite3_result_null(ctx->ctx);
-            break;
-        default:
-            luaL_error(L, "invalid result type %s", lua_typename(L, 2));
-            break;
-    }
-
-    return 0;
-}
-
-static int lcontext_result_blob(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    const char *blob = luaL_checkstring(L, 2);
-    int size = lua_strlen(L, 2);
-    sqlite3_result_blob(ctx->ctx, (const void*)blob, size, SQLITE_TRANSIENT);
-    return 0;
-}
-
-static int lcontext_result_double(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    double d = luaL_checknumber(L, 2);
-    sqlite3_result_double(ctx->ctx, d);
-    return 0;
-}
-
-static int lcontext_result_error(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    const char *err = luaL_checkstring(L, 2);
-    int size = lua_strlen(L, 2);
-    sqlite3_result_error(ctx->ctx, err, size);
-    return 0;
-}
-
-static int lcontext_result_int(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    int i = luaL_checkint(L, 2);
-    sqlite3_result_int(ctx->ctx, i);
-    return 0;
-}
-
-static int lcontext_result_null(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    sqlite3_result_null(ctx->ctx);
-    return 0;
-}
-
-static int lcontext_result_text(lua_State *L) {
-    lcontext *ctx = lsqlite_checkcontext(L, 1);
-    const char *text = luaL_checkstring(L, 2);
-    int size = lua_strlen(L, 2);
-    sqlite3_result_text(ctx->ctx, text, size, SQLITE_TRANSIENT);
-    return 0;
-}
-
-/*
-** =======================================================
-** Database Methods
-** =======================================================
-*/
-
-static int db_isopen(lua_State *L) {
-    sdb *db = lsqlite_getdb(L, 1);
-    lua_pushboolean(L, db->db != NULL ? 1 : 0);
-    return 1;
-}
-
-static int db_last_insert_rowid(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    /* conversion warning: int64 -> luaNumber */
-    sqlite_int64 rowid = sqlite3_last_insert_rowid(db->db);
-    lua_Number n = (lua_Number)rowid;
-    if (n == rowid)
-        lua_pushnumber(L, n);
-    else
-        lua_pushfstring(L, "%ll", rowid);
-    return 1;
-}
-
-static int db_changes(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    lua_pushnumber(L, sqlite3_changes(db->db));
-    return 1;
-}
-
-static int db_total_changes(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    lua_pushnumber(L, sqlite3_total_changes(db->db));
-    return 1;
-}
-
-static int db_errcode(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    lua_pushnumber(L, sqlite3_errcode(db->db));
-    return 1;
-}
-
-static int db_errmsg(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    lua_pushstring(L, sqlite3_errmsg(db->db));
-    return 1;
-}
-
-static int db_interrupt(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    sqlite3_interrupt(db->db);
-    return 0;
-}
-
-/*
-** Registering SQL functions:
-*/
-
-static void db_push_value(lua_State *L, sqlite3_value *value) {
-    switch (sqlite3_value_type(value)) {
-        case SQLITE_TEXT:
-            lua_pushlstring(L, (const char*)sqlite3_value_text(value), sqlite3_value_bytes(value));
-            break;
-
-        case SQLITE_INTEGER:
-            {
-                sqlite_int64 i64 = sqlite3_value_int64(value);
-                lua_Number n = (lua_Number)i64;
-                if (n == i64)
-                    lua_pushnumber(L, n);
-                else
-                    lua_pushlstring(L, (const char*)sqlite3_value_text(value), sqlite3_value_bytes(value));
-            }
-            break;
-
-        case SQLITE_FLOAT:
-            lua_pushnumber(L, sqlite3_value_double(value));
-            break;
-
-        case SQLITE_BLOB:
-            lua_pushlstring(L, sqlite3_value_blob(value), sqlite3_value_bytes(value));
-            break;
-
-        case SQLITE_NULL:
-            lua_pushnil(L);
-            break;
-
-        default:
-            /* things done properly (SQLite + Lua SQLite)
-            ** this should never happen */
-            lua_pushnil(L);
-            break;
-    }
-}
-
-/*
-** callback functions used when calling registered sql functions
-*/
-
-/* scalar function to be called
-** callback params: context, values... */
-static void db_sql_normal_function(sqlite3_context *context, int argc, sqlite3_value **argv) {
-    sdb_func *func = (sdb_func*)sqlite3_user_data(context);
-    lua_State *L = func->db->L;
-    int n;
-    lcontext *ctx;
-
-    int top = lua_gettop(L);
-
-    /* ensure there is enough space in the stack */
-    lua_checkstack(L, argc + 3);
-
-    lua_rawgeti(L, LUA_REGISTRYINDEX, func->fn_step);   /* function to call */
-
-    if (!func->aggregate) {
-        ctx = lsqlite_make_context(L); /* push context - used to set results */
-    }
-    else {
-        /* reuse context userdata value */
-        void *p = sqlite3_aggregate_context(context, 1);
-        /* i think it is OK to use assume that using a light user data
-        ** as an entry on LUA REGISTRY table will be unique */
-        lua_pushlightuserdata(L, p);
-        lua_rawget(L, LUA_REGISTRYINDEX);       /* context table */
-
-        if (lua_isnil(L, -1)) { /* not yet created? */
-            lua_pop(L, 1);
-            ctx = lsqlite_make_context(L);
-            lua_pushlightuserdata(L, p);
-            lua_pushvalue(L, -2);
-            lua_rawset(L, LUA_REGISTRYINDEX);
-        }
-        else
-            ctx = lsqlite_getcontext(L, -1);
-    }
-
-    /* push params */
-    for (n = 0; n < argc; ++n) {
-        db_push_value(L, argv[n]);
-    }
-
-    /* set context */
-    ctx->ctx = context;
-
-    if (lua_pcall(L, argc + 1, 0, 0)) {
-        const char *errmsg = lua_tostring(L, -1);
-        int size = lua_strlen(L, -1);
-        sqlite3_result_error(context, errmsg, size);
-    }
-
-    /* invalidate context */
-    ctx->ctx = NULL;
-
-    if (!func->aggregate) {
-        luaL_unref(L, LUA_REGISTRYINDEX, ctx->ud);
-    }
-
-    lua_settop(L, top);
-}
-
-static void db_sql_finalize_function(sqlite3_context *context) {
-    sdb_func *func = (sdb_func*)sqlite3_user_data(context);
-    lua_State *L = func->db->L;
-    void *p = sqlite3_aggregate_context(context, 1); /* minimal mem usage */
-    lcontext *ctx;
-    int top = lua_gettop(L);
-
-    lua_rawgeti(L, LUA_REGISTRYINDEX, func->fn_finalize);   /* function to call */
-
-    /* i think it is OK to use assume that using a light user data
-    ** as an entry on LUA REGISTRY table will be unique */
-    lua_pushlightuserdata(L, p);
-    lua_rawget(L, LUA_REGISTRYINDEX);       /* context table */
-
-    if (lua_isnil(L, -1)) { /* not yet created? - shouldn't happen in finalize function */
-        lua_pop(L, 1);
-        ctx = lsqlite_make_context(L);
-        lua_pushlightuserdata(L, p);
-        lua_pushvalue(L, -2);
-        lua_rawset(L, LUA_REGISTRYINDEX);
-    }
-    else
-        ctx = lsqlite_getcontext(L, -1);
-
-    /* set context */
-    ctx->ctx = context;
-
-    if (lua_pcall(L, 1, 0, 0)) {
-        sqlite3_result_error(context, lua_tostring(L, -1), -1);
-    }
-
-    /* invalidate context */
-    ctx->ctx = NULL;
-
-    /* cleanup context */
-    luaL_unref(L, LUA_REGISTRYINDEX, ctx->ud);
-    /* remove it from registry */
-    lua_pushlightuserdata(L, p);
-    lua_pushnil(L);
-    lua_rawset(L, LUA_REGISTRYINDEX);
-
-    lua_settop(L, top);
-}
-
-/*
-** Register a normal function
-** Params: db, function name, number arguments, [ callback | step, finalize], user data
-** Returns: true on sucess
-**
-** Normal function:
-** Params: context, params
-**
-** Aggregate function:
-** Params of step: context, params
-** Params of finalize: context
-*/
-static int db_register_function(lua_State *L, int aggregate) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    const char *name;
-    int args;
-    int result;
-    sdb_func *func;
-
-    /* safety measure */
-    if (aggregate) aggregate = 1;
-
-    name = luaL_checkstring(L, 2);
-    args = luaL_checkint(L, 3);
-    luaL_checktype(L, 4, LUA_TFUNCTION);
-    if (aggregate) luaL_checktype(L, 5, LUA_TFUNCTION);
-
-    /* maybe an alternative way to allocate memory should be used/avoided */
-    func = (sdb_func*)malloc(sizeof(sdb_func));
-    if (func == NULL) {
-        luaL_error(L, "out of memory");
-    }
-
-    result = sqlite3_create_function(
-        db->db, name, args, SQLITE_UTF8, func,
-        aggregate ? NULL : db_sql_normal_function,
-        aggregate ? db_sql_normal_function : NULL,
-        aggregate ? db_sql_finalize_function : NULL
-    );
-
-    if (result == SQLITE_OK) {
-        /* safety measures for userdata field to be present in the stack */
-        lua_settop(L, 5 + aggregate);
-
-        /* save registered function in db function list */
-        func->db = db;
-        func->aggregate = aggregate;
-        func->next = db->func;
-        db->func = func;
-
-        /* save the setp/normal function callback */
-        lua_pushvalue(L, 4);
-        func->fn_step = luaL_ref(L, LUA_REGISTRYINDEX);
-        /* save user data */
-        lua_pushvalue(L, 5+aggregate);
-        func->udata = luaL_ref(L, LUA_REGISTRYINDEX);
-
-        if (aggregate) {
-            lua_pushvalue(L, 5);
-            func->fn_finalize = luaL_ref(L, LUA_REGISTRYINDEX);
-        }
-        else
-            func->fn_finalize = LUA_NOREF;
-    }
-    else {
-        /* free allocated memory */
-        free(func);
-    }
-
-    lua_pushboolean(L, result == SQLITE_OK ? 1 : 0);
-    return 1;
-}
-
-static int db_create_function(lua_State *L) {
-    return db_register_function(L, 0);
-}
-
-static int db_create_aggregate(lua_State *L) {
-    return db_register_function(L, 1);
-}
-
-/* create_collation; contributed by Thomas Lauer
-*/
-
-typedef struct {
-    lua_State *L;
-    int ref;
-} scc;
-
-static int collwrapper(scc *co,int l1,const void *p1,
-                        int l2,const void *p2) {
-    int res=0;
-    lua_State *L=co->L;
-    lua_rawgeti(L,LUA_REGISTRYINDEX,co->ref);
-    lua_pushlstring(L,p1,l1);
-    lua_pushlstring(L,p2,l2);
-    if (lua_pcall(L,2,1,0)==0) res=(int)lua_tonumber(L,-1);
-    lua_pop(L,1);
-    return res;
-}
-
-static void collfree(scc *co) {
-    if (co) {
-        luaL_unref(co->L,LUA_REGISTRYINDEX,co->ref);
-        free(co);
-    }
-}
-
-static int db_create_collation(lua_State *L) {
-    sdb *db=lsqlite_checkdb(L,1);
-    const char *collname=luaL_checkstring(L,2);
-    scc *co=NULL;
-    int (*collfunc)(scc *,int,const void *,int,const void *)=NULL;
-    lua_settop(L,3); /* default args to nil, and exclude extras */
-    if (lua_isfunction(L,3)) collfunc=collwrapper;
-    else if (!lua_isnil(L,3))
-        luaL_error(L,"create_collation: function or nil expected");
-    if (collfunc != NULL) {
-        co=(scc *)malloc(sizeof(scc)); /* userdata is a no-no as it
-                                          will be garbage-collected */
-        if (co) {
-            co->L=L;
-            /* lua_settop(L,3) above means we don't need: lua_pushvalue(L,3); */
-            co->ref=luaL_ref(L,LUA_REGISTRYINDEX);
-        }
-        else luaL_error(L,"create_collation: could not allocate callback");
-    }
-    sqlite3_create_collation_v2(db->db, collname, SQLITE_UTF8,
-        (void *)co,
-        (int(*)(void*,int,const void*,int,const void*))collfunc,
-        (void(*)(void*))collfree);
-    return 0;
-}
-
-/*
-** trace callback:
-** Params: database, callback function, userdata
-**
-** callback function:
-** Params: userdata, sql
-*/
-static void db_trace_callback(void *user, const char *sql) {
-    sdb *db = (sdb*)user;
-    lua_State *L = db->L;
-    int top = lua_gettop(L);
-
-    /* setup lua callback call */
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->trace_cb);    /* get callback */
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->trace_udata); /* get callback user data */
-    lua_pushstring(L, sql); /* traced sql statement */
-
-    /* call lua function */
-    lua_pcall(L, 2, 0, 0);
-    /* ignore any error generated by this function */
-
-    lua_settop(L, top);
-}
-
-static int db_trace(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-
-    if (lua_gettop(L) < 2 || lua_isnil(L, 2)) {
-        luaL_unref(L, LUA_REGISTRYINDEX, db->trace_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->trace_udata);
-
-        db->trace_cb =
-        db->trace_udata = LUA_NOREF;
-
-        /* clear trace handler */
-        sqlite3_trace(db->db, NULL, NULL);
-    }
-    else {
-        luaL_checktype(L, 2, LUA_TFUNCTION);
-
-        /* make sure we have an userdata field (even if nil) */
-        lua_settop(L, 3);
-
-        luaL_unref(L, LUA_REGISTRYINDEX, db->trace_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->trace_udata);
-
-        db->trace_udata = luaL_ref(L, LUA_REGISTRYINDEX);
-        db->trace_cb = luaL_ref(L, LUA_REGISTRYINDEX);
-
-        /* set trace handler */
-        sqlite3_trace(db->db, db_trace_callback, db);
-    }
-
-    return 0;
-}
-
-#if !defined(LSQLITE_OMIT_UPDATE_HOOK) || !LSQLITE_OMIT_UPDATE_HOOK
-
-/*
-** update_hook callback:
-** Params: database, callback function, userdata
-**
-** callback function:
-** Params: userdata, {one of SQLITE_INSERT, SQLITE_DELETE, or SQLITE_UPDATE}, 
-**          database name, table name (containing the affected row), rowid of the row
-*/
-static void db_update_hook_callback(void *user, int op, char const *dbname, char const *tblname, sqlite3_int64 rowid) {
-    sdb *db = (sdb*)user;
-    lua_State *L = db->L;
-    int top = lua_gettop(L);
-    lua_Number n = (lua_Number)rowid;
-
-    /* setup lua callback call */
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->update_hook_cb);    /* get callback */
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->update_hook_udata); /* get callback user data */
-    lua_pushnumber(L, (lua_Number )op);
-    lua_pushstring(L, dbname); /* update_hook database name */
-    lua_pushstring(L, tblname); /* update_hook database name */
-    if (n == rowid)
-        lua_pushnumber(L, n);
-    else
-        lua_pushfstring(L, "%ll", rowid);
-
-    /* call lua function */
-    lua_pcall(L, 5, 0, 0);
-    /* ignore any error generated by this function */
-
-    lua_settop(L, top);
-}
-
-static int db_update_hook(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-
-    if (lua_gettop(L) < 2 || lua_isnil(L, 2)) {
-        luaL_unref(L, LUA_REGISTRYINDEX, db->update_hook_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->update_hook_udata);
-
-        db->update_hook_cb =
-        db->update_hook_udata = LUA_NOREF;
-
-        /* clear update_hook handler */
-        sqlite3_update_hook(db->db, NULL, NULL);
-    }
-    else {
-        luaL_checktype(L, 2, LUA_TFUNCTION);
-
-        /* make sure we have an userdata field (even if nil) */
-        lua_settop(L, 3);
-
-        luaL_unref(L, LUA_REGISTRYINDEX, db->update_hook_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->update_hook_udata);
-
-        db->update_hook_udata = luaL_ref(L, LUA_REGISTRYINDEX);
-        db->update_hook_cb = luaL_ref(L, LUA_REGISTRYINDEX);
-
-        /* set update_hook handler */
-        sqlite3_update_hook(db->db, db_update_hook_callback, db);
-    }
-
-    return 0;
-}
-
-/*
-** commit_hook callback:
-** Params: database, callback function, userdata
-**
-** callback function:
-** Params: userdata
-** Returned value: Return false or nil to continue the COMMIT operation normally.
-**  return true (non false, non nil), then the COMMIT is converted into a ROLLBACK. 
-*/
-static int db_commit_hook_callback(void *user) {
-    sdb *db = (sdb*)user;
-    lua_State *L = db->L;
-    int top = lua_gettop(L);
-    int rollback = 0;
-
-    /* setup lua callback call */
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->commit_hook_cb);    /* get callback */
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->commit_hook_udata); /* get callback user data */
-
-    /* call lua function */
-    if (!lua_pcall(L, 1, 1, 0))
-        rollback = lua_toboolean(L, -1); /* use result if there was no error */
-
-    lua_settop(L, top);
-    return rollback;
-}
-
-static int db_commit_hook(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-
-    if (lua_gettop(L) < 2 || lua_isnil(L, 2)) {
-        luaL_unref(L, LUA_REGISTRYINDEX, db->commit_hook_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->commit_hook_udata);
-
-        db->commit_hook_cb =
-        db->commit_hook_udata = LUA_NOREF;
-
-        /* clear commit_hook handler */
-        sqlite3_commit_hook(db->db, NULL, NULL);
-    }
-    else {
-        luaL_checktype(L, 2, LUA_TFUNCTION);
-
-        /* make sure we have an userdata field (even if nil) */
-        lua_settop(L, 3);
-
-        luaL_unref(L, LUA_REGISTRYINDEX, db->commit_hook_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->commit_hook_udata);
-
-        db->commit_hook_udata = luaL_ref(L, LUA_REGISTRYINDEX);
-        db->commit_hook_cb = luaL_ref(L, LUA_REGISTRYINDEX);
-
-        /* set commit_hook handler */
-        sqlite3_commit_hook(db->db, db_commit_hook_callback, db);
-    }
-
-    return 0;
-}
-
-/*
-** rollback hook callback:
-** Params: database, callback function, userdata
-**
-** callback function:
-** Params: userdata
-*/
-static void db_rollback_hook_callback(void *user) {
-    sdb *db = (sdb*)user;
-    lua_State *L = db->L;
-    int top = lua_gettop(L);
-
-    /* setup lua callback call */
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->rollback_hook_cb);    /* get callback */
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->rollback_hook_udata); /* get callback user data */
-
-    /* call lua function */
-    lua_pcall(L, 1, 0, 0);
-    /* ignore any error generated by this function */
-
-    lua_settop(L, top);
-}
-
-static int db_rollback_hook(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-
-    if (lua_gettop(L) < 2 || lua_isnil(L, 2)) {
-        luaL_unref(L, LUA_REGISTRYINDEX, db->rollback_hook_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->rollback_hook_udata);
-
-        db->rollback_hook_cb =
-        db->rollback_hook_udata = LUA_NOREF;
-
-        /* clear rollback_hook handler */
-        sqlite3_rollback_hook(db->db, NULL, NULL);
-    }
-    else {
-        luaL_checktype(L, 2, LUA_TFUNCTION);
-
-        /* make sure we have an userdata field (even if nil) */
-        lua_settop(L, 3);
-
-        luaL_unref(L, LUA_REGISTRYINDEX, db->rollback_hook_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->rollback_hook_udata);
-
-        db->rollback_hook_udata = luaL_ref(L, LUA_REGISTRYINDEX);
-        db->rollback_hook_cb = luaL_ref(L, LUA_REGISTRYINDEX);
-
-        /* set rollback_hook handler */
-        sqlite3_rollback_hook(db->db, db_rollback_hook_callback, db);
-    }
-
-    return 0;
-}
-
-#endif /* #if !defined(LSQLITE_OMIT_UPDATE_HOOK) || !LSQLITE_OMIT_UPDATE_HOOK */
-
-#if !defined(SQLITE_OMIT_PROGRESS_CALLBACK) || !SQLITE_OMIT_PROGRESS_CALLBACK
-
-/*
-** progress handler:
-** Params: database, number of opcodes, callback function, userdata
-**
-** callback function:
-** Params: userdata
-** returns: 0 to return immediatly and return SQLITE_ABORT, non-zero to continue
-*/
-static int db_progress_callback(void *user) {
-    int result = 1; /* abort by default */
-    sdb *db = (sdb*)user;
-    lua_State *L = db->L;
-    int top = lua_gettop(L);
-
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->progress_cb);
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->progress_udata);
-
-    /* call lua function */
-    if (!lua_pcall(L, 1, 1, 0))
-        result = lua_toboolean(L, -1);
-
-    lua_settop(L, top);
-    return result;
-}
-
-static int db_progress_handler(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-
-    if (lua_gettop(L) < 2 || lua_isnil(L, 2)) {
-        luaL_unref(L, LUA_REGISTRYINDEX, db->progress_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->progress_udata);
-
-        db->progress_cb =
-        db->progress_udata = LUA_NOREF;
-
-        /* clear busy handler */
-        sqlite3_progress_handler(db->db, 0, NULL, NULL);
-    }
-    else {
-        int nop = luaL_checkint(L, 2);  /* number of opcodes */
-        luaL_checktype(L, 3, LUA_TFUNCTION);
-
-        /* make sure we have an userdata field (even if nil) */
-        lua_settop(L, 4);
-
-        luaL_unref(L, LUA_REGISTRYINDEX, db->progress_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->progress_udata);
-
-        db->progress_udata = luaL_ref(L, LUA_REGISTRYINDEX);
-        db->progress_cb = luaL_ref(L, LUA_REGISTRYINDEX);
-
-        /* set progress callback */
-        sqlite3_progress_handler(db->db, nop, db_progress_callback, db);
-    }
-
-    return 0;
-}
-
-#else /* #if !defined(SQLITE_OMIT_PROGRESS_CALLBACK) || !SQLITE_OMIT_PROGRESS_CALLBACK */
-
-static int db_progress_handler(lua_State *L) {
-    lua_pushliteral(L, "progress callback support disabled at compile time");
-    lua_error(L);
-    return 0;
-}
-
-#endif /* #if !defined(SQLITE_OMIT_PROGRESS_CALLBACK) || !SQLITE_OMIT_PROGRESS_CALLBACK */
-
-/*
-** busy handler:
-** Params: database, callback function, userdata
-**
-** callback function:
-** Params: userdata, number of tries
-** returns: 0 to return immediatly and return SQLITE_BUSY, non-zero to try again
-*/
-static int db_busy_callback(void *user, int tries) {
-    int retry = 0; /* abort by default */
-    sdb *db = (sdb*)user;
-    lua_State *L = db->L;
-    int top = lua_gettop(L);
-
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->busy_cb);
-    lua_rawgeti(L, LUA_REGISTRYINDEX, db->busy_udata);
-    lua_pushnumber(L, tries);
-
-    /* call lua function */
-    if (!lua_pcall(L, 2, 1, 0))
-        retry = lua_toboolean(L, -1);
-
-    lua_settop(L, top);
-    return retry;
-}
-
-static int db_busy_handler(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-
-    if (lua_gettop(L) < 2 || lua_isnil(L, 2)) {
-        luaL_unref(L, LUA_REGISTRYINDEX, db->busy_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->busy_udata);
-
-        db->busy_cb =
-        db->busy_udata = LUA_NOREF;
-
-        /* clear busy handler */
-        sqlite3_busy_handler(db->db, NULL, NULL);
-    }
-    else {
-        luaL_checktype(L, 2, LUA_TFUNCTION);
-        /* make sure we have an userdata field (even if nil) */
-        lua_settop(L, 3);
-
-        luaL_unref(L, LUA_REGISTRYINDEX, db->busy_cb);
-        luaL_unref(L, LUA_REGISTRYINDEX, db->busy_udata);
-
-        db->busy_udata = luaL_ref(L, LUA_REGISTRYINDEX);
-        db->busy_cb = luaL_ref(L, LUA_REGISTRYINDEX);
-
-        /* set busy handler */
-        sqlite3_busy_handler(db->db, db_busy_callback, db);
-    }
-
-    return 0;
-}
-
-static int db_busy_timeout(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    int timeout = luaL_checkint(L, 2);
-    sqlite3_busy_timeout(db->db, timeout);
-
-    /* if there was a timeout callback registered, it is now
-    ** invalid/useless. free any references we may have */
-    luaL_unref(L, LUA_REGISTRYINDEX, db->busy_cb);
-    luaL_unref(L, LUA_REGISTRYINDEX, db->busy_udata);
-    db->busy_cb =
-    db->busy_udata = LUA_NOREF;
-
-    return 0;
-}
-
-/*
-** Params: db, sql, callback, user
-** returns: code [, errmsg]
-**
-** Callback:
-** Params: user, number of columns, values, names
-** Returns: 0 to continue, other value will cause abort
-*/
-static int db_exec_callback(void* user, int columns, char **data, char **names) {
-    int result = SQLITE_ABORT; /* abort by default */
-    lua_State *L = (lua_State*)user;
-    int n;
-
-    int top = lua_gettop(L);
-
-    lua_pushvalue(L, 3); /* function to call */
-    lua_pushvalue(L, 4); /* user data */
-    lua_pushnumber(L, columns); /* total number of rows in result */
-
-    /* column values */
-    lua_pushvalue(L, 6);
-    for (n = 0; n < columns;) {
-        lua_pushstring(L, data[n++]);
-        lua_rawseti(L, -2, n);
-    }
-
-    /* columns names */
-    lua_pushvalue(L, 5);
-    if (lua_isnil(L, -1)) {
-        lua_pop(L, 1);
-        lua_newtable(L);
-        lua_pushvalue(L, -1);
-        lua_replace(L, 5);
-        for (n = 0; n < columns;) {
-            lua_pushstring(L, names[n++]);
-            lua_rawseti(L, -2, n);
-        }
-    }
-
-    /* call lua function */
-    if (!lua_pcall(L, 4, 1, 0)) {
-        if (lua_isnumber(L, -1))
-            result = (int)lua_tonumber(L, -1);
-    }
-
-    lua_settop(L, top);
-    return result;
-}
-
-static int db_exec(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    const char *sql = luaL_checkstring(L, 2);
-    int result;
-
-    if (!lua_isnoneornil(L, 3)) {
-        /* stack:
-        **  3: callback function
-        **  4: userdata
-        **  5: column names
-        **  6: reusable column values
-        */
-        luaL_checktype(L, 3, LUA_TFUNCTION);
-        lua_settop(L, 4);   /* 'trap' userdata - nil extra parameters */
-        lua_pushnil(L);     /* column names not known at this point */
-        lua_newtable(L);    /* column values table */
-
-        result = sqlite3_exec(db->db, sql, db_exec_callback, L, NULL);
-    }
-    else {
-        /* no callbacks */
-        result = sqlite3_exec(db->db, sql, NULL, NULL, NULL);
-    }
-
-    lua_pushnumber(L, result);
-    return 1;
-}
-
-/*
-** Params: db, sql
-** returns: code, compiled length or error message
-*/
-static int db_prepare(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    const char *sql = luaL_checkstring(L, 2);
-    int sql_len = lua_strlen(L, 2);
-    const char *sqltail;
-    sdb_vm *svm;
-    lua_settop(L,2); /* sql is on top of stack for call to newvm */
-    svm = newvm(L, db);
-
-    if (sqlite3_prepare(db->db, sql, sql_len, &svm->vm, &sqltail) != SQLITE_OK) {
-        cleanupvm(L, svm);
-
-        lua_pushnil(L);
-        lua_pushnumber(L, sqlite3_errcode(db->db));
-        return 2;
-    }
-
-    /* vm already in the stack */
-    lua_pushstring(L, sqltail);
-    return 2;
-}
-
-static int db_do_next_row(lua_State *L, int packed) {
-    int result;
-    sdb_vm *svm = lsqlite_checkvm(L, 1);
-    sqlite3_stmt *vm;
-    int columns;
-    int i;
-
-    result = stepvm(L, svm);
-    vm = svm->vm; /* stepvm may change svm->vm if re-prepare is needed */
-    svm->has_values = result == SQLITE_ROW ? 1 : 0;
-    svm->columns = columns = sqlite3_data_count(vm);
-
-    if (result == SQLITE_ROW) {
-        if (packed) {
-            lua_newtable(L);
-            if (packed == 1) {
-                for (i = 0; i < columns;) {
-                    vm_push_column(L, vm, i);
-                    lua_rawseti(L, -2, ++i);
-                }
-            }
-            else {
-                for (i = 0; i < columns; ++i) {
-                    lua_pushstring(L, sqlite3_column_name(vm, i));
-                    vm_push_column(L, vm, i);
-                    lua_rawset(L, -3);
-                }
-            }
-            return 1;
-        }
-        else {
-            lua_checkstack(L, columns);
-            for (i = 0; i < columns; ++i)
-                vm_push_column(L, vm, i);
-            return svm->columns;
-        }
-    }
-
-    if (svm->temp) {
-        /* finalize and check for errors */
-        result = sqlite3_finalize(vm);
-        svm->vm = NULL;
-        cleanupvm(L, svm);
-    }
-    else if (result == SQLITE_DONE) {
-        result = sqlite3_reset(vm);
-    }
-
-    if (result != SQLITE_OK) {
-        lua_pushstring(L, sqlite3_errmsg(svm->db->db));
-        lua_error(L);
-    }
-    return 0;
-}
-
-static int db_next_row(lua_State *L) {
-    return db_do_next_row(L, 0);
-}
-
-static int db_next_packed_row(lua_State *L) {
-    return db_do_next_row(L, 1);
-}
-
-static int db_next_named_row(lua_State *L) {
-    return db_do_next_row(L, 2);
-}
-
-static int dbvm_do_rows(lua_State *L, int(*f)(lua_State *)) {
-    /* sdb_vm *svm =  */
-    lsqlite_checkvm(L, 1);
-    lua_pushvalue(L,1);
-    lua_pushcfunction(L, f);
-    lua_insert(L, -2);
-    return 2;
-}
-
-static int dbvm_rows(lua_State *L) {
-    return dbvm_do_rows(L, db_next_packed_row);
-}
-
-static int dbvm_nrows(lua_State *L) {
-    return dbvm_do_rows(L, db_next_named_row);
-}
-
-static int dbvm_urows(lua_State *L) {
-    return dbvm_do_rows(L, db_next_row);
-}
-
-static int db_do_rows(lua_State *L, int(*f)(lua_State *)) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    const char *sql = luaL_checkstring(L, 2);
-    sdb_vm *svm;
-    lua_settop(L,2); /* sql is on top of stack for call to newvm */
-    svm = newvm(L, db);
-    svm->temp = 1;
-
-    if (sqlite3_prepare(db->db, sql, -1, &svm->vm, NULL) != SQLITE_OK) {
-        cleanupvm(L, svm);
-
-        lua_pushstring(L, sqlite3_errmsg(svm->db->db));
-        lua_error(L);
-    }
-
-    lua_pushcfunction(L, f);
-    lua_insert(L, -2);
-    return 2;
-}
-
-static int db_rows(lua_State *L) {
-    return db_do_rows(L, db_next_packed_row);
-}
-
-static int db_nrows(lua_State *L) {
-    return db_do_rows(L, db_next_named_row);
-}
-
-/* unpacked version of db:rows */
-static int db_urows(lua_State *L) {
-    return db_do_rows(L, db_next_row);
-}
-
-static int db_tostring(lua_State *L) {
-    char buff[32];
-    sdb *db = lsqlite_getdb(L, 1);
-    if (db->db == NULL)
-        strcpy(buff, "closed");
-    else
-        sprintf(buff, "%p", lua_touserdata(L, 1));
-    lua_pushfstring(L, "sqlite database (%s)", buff);
-    return 1;
-}
-
-static int db_close(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    lua_pushnumber(L, cleanupdb(L, db));
-    return 1;
-}
-
-static int db_close_vm(lua_State *L) {
-    sdb *db = lsqlite_checkdb(L, 1);
-    /* cleanup temporary only tables? */
-    int temp = lua_toboolean(L, 2);
-
-    /* free associated virtual machines */
-    lua_pushlightuserdata(L, db);
-    lua_rawget(L, LUA_REGISTRYINDEX);
-
-    /* close all used handles */
-    lua_pushnil(L);
-    while (lua_next(L, -2)) {
-        sdb_vm *svm = lua_touserdata(L, -2); /* key: vm; val: sql text */
-
-        if ((!temp || svm->temp) && svm->vm)
-        {
-            sqlite3_finalize(svm->vm);
-            svm->vm = NULL;
-        }
-
-        /* leave key in the stack */
-        lua_pop(L, 1);
-    }
-    return 0;
-}
-
-static int db_gc(lua_State *L) {
-    sdb *db = lsqlite_getdb(L, 1);
-    if (db->db != NULL)  /* ignore closed databases */
-        cleanupdb(L, db);
-    return 0;
-}
-
-/*
-** =======================================================
-** General library functions
-** =======================================================
-*/
-
-static int lsqlite_version(lua_State *L) {
-    lua_pushstring(L, sqlite3_libversion());
-    return 1;
-}
-
-static int lsqlite_complete(lua_State *L) {
-    const char *sql = luaL_checkstring(L, 1);
-    lua_pushboolean(L, sqlite3_complete(sql));
-    return 1;
-}
-
-#ifndef WIN32
-static int lsqlite_temp_directory(lua_State *L) {
-    const char *oldtemp = sqlite3_temp_directory;
-
-    if (!lua_isnone(L, 1)) {
-        const char *temp = luaL_optstring(L, 1, NULL);
-        if (sqlite3_temp_directory) {
-            sqlite3_free((char*)sqlite3_temp_directory);
-        }
-        if (temp) {
-            sqlite3_temp_directory = sqlite3_mprintf("%s", temp);
-        }
-        else {
-            sqlite3_temp_directory = NULL;
-        }
-    }
-    lua_pushstring(L, oldtemp);
-    return 1;
-}
-#endif
-
-static int lsqlite_do_open(lua_State *L, const char *filename) {
-    sdb *db = newdb(L); /* create and leave in stack */
-
-    if (sqlite3_open(filename, &db->db) == SQLITE_OK) {
-        /* database handle already in the stack - return it */
-        return 1;
-    }
-
-    /* failed to open database */
-    lua_pushnil(L);                             /* push nil */
-    lua_pushnumber(L, sqlite3_errcode(db->db));
-    lua_pushstring(L, sqlite3_errmsg(db->db));  /* push error message */
-
-    /* clean things up */
-    cleanupdb(L, db);
-
-    /* return */
-    return 3;
-}
-
-static int lsqlite_open(lua_State *L) {
-    const char *filename = luaL_checkstring(L, 1);
-    return lsqlite_do_open(L, filename);
-}
-
-static int lsqlite_open_memory(lua_State *L) {
-    return lsqlite_do_open(L, ":memory:");
-}
-
-static int lsqlite_newindex(lua_State *L) {
-    lua_pushliteral(L, "attempt to change readonly table");
-    lua_error(L);
-    return 0;
-}
-
-/*
-** =======================================================
-** Register functions
-** =======================================================
-*/
-
-#define SC(s)   { #s, SQLITE_ ## s },
-#define LSC(s)  { #s, LSQLITE_ ## s },
-
-static const struct {
-    const char* name;
-    int value;
-} sqlite_constants[] = {
-    /* error codes */
-    SC(OK)          SC(ERROR)       SC(INTERNAL)    SC(PERM)
-    SC(ABORT)       SC(BUSY)        SC(LOCKED)      SC(NOMEM)
-    SC(READONLY)    SC(INTERRUPT)   SC(IOERR)       SC(CORRUPT)
-    SC(NOTFOUND)    SC(FULL)        SC(CANTOPEN)    SC(PROTOCOL)
-    SC(EMPTY)       SC(SCHEMA)      SC(TOOBIG)      SC(CONSTRAINT)
-    SC(MISMATCH)    SC(MISUSE)      SC(NOLFS)
-    SC(FORMAT)      SC(NOTADB)
-
-    /* sqlite_step specific return values */
-    SC(RANGE)       SC(ROW)         SC(DONE)
-
-    /* column types */
-    SC(INTEGER)     SC(FLOAT)       SC(TEXT)        SC(BLOB)
-    SC(NULL)
-
-    /* Authorizer Action Codes */
-    SC(CREATE_INDEX       )
-    SC(CREATE_TABLE       )
-    SC(CREATE_TEMP_INDEX  )
-    SC(CREATE_TEMP_TABLE  )
-    SC(CREATE_TEMP_TRIGGER)
-    SC(CREATE_TEMP_VIEW   )
-    SC(CREATE_TRIGGER     )
-    SC(CREATE_VIEW        )
-    SC(DELETE             )
-    SC(DROP_INDEX         )
-    SC(DROP_TABLE         )
-    SC(DROP_TEMP_INDEX    )
-    SC(DROP_TEMP_TABLE    )
-    SC(DROP_TEMP_TRIGGER  )
-    SC(DROP_TEMP_VIEW     )
-    SC(DROP_TRIGGER       )
-    SC(DROP_VIEW          )
-    SC(INSERT             )
-    SC(PRAGMA             )
-    SC(READ               )
-    SC(SELECT             )
-    SC(TRANSACTION        )
-    SC(UPDATE             )
-    SC(ATTACH             )
-    SC(DETACH             )
-    SC(ALTER_TABLE        )
-    SC(REINDEX            )
-    SC(ANALYZE            )
-    SC(CREATE_VTABLE      )
-    SC(DROP_VTABLE        )
-    SC(FUNCTION           )
-    SC(SAVEPOINT          )
-
-    /* terminator */
-    { NULL, 0 }
-};
-
-/* ======================================================= */
-
-static const luaL_Reg dblib[] = {
-    {"isopen",              db_isopen               },
-    {"last_insert_rowid",   db_last_insert_rowid    },
-    {"changes",             db_changes              },
-    {"total_changes",       db_total_changes        },
-    {"errcode",             db_errcode              },
-    {"error_code",          db_errcode              },
-    {"errmsg",              db_errmsg               },
-    {"error_message",       db_errmsg               },
-    {"interrupt",           db_interrupt            },
-
-    {"create_function",     db_create_function      },
-    {"create_aggregate",    db_create_aggregate     },
-    {"create_collation",    db_create_collation     },
-
-    {"trace",               db_trace                },
-    {"progress_handler",    db_progress_handler     },
-    {"busy_timeout",        db_busy_timeout         },
-    {"busy_handler",        db_busy_handler         },
-#if !defined(LSQLITE_OMIT_UPDATE_HOOK) || !LSQLITE_OMIT_UPDATE_HOOK
-    {"update_hook",         db_update_hook          },
-    {"commit_hook",         db_commit_hook          },
-    {"rollback_hook",       db_rollback_hook        },
-#endif
-
-    {"prepare",             db_prepare              },
-    {"rows",                db_rows                 },
-    {"urows",               db_urows                },
-    {"nrows",               db_nrows                },
-
-    {"exec",                db_exec                 },
-    {"execute",             db_exec                 },
-    {"close",               db_close                },
-    {"close_vm",            db_close_vm             },
-
-    {"__tostring",          db_tostring             },
-    {"__gc",                db_gc                   },
-
-    {NULL, NULL}
-};
-
-static const luaL_Reg vmlib[] = {
-    {"isopen",              dbvm_isopen             },
-
-    {"step",                dbvm_step               },
-    {"reset",               dbvm_reset              },
-    {"finalize",            dbvm_finalize           },
-
-    {"columns",             dbvm_columns            },
-
-    {"bind",                dbvm_bind               },
-    {"bind_values",         dbvm_bind_values        },
-    {"bind_names",          dbvm_bind_names         },
-    {"bind_blob",           dbvm_bind_blob          },
-    {"bind_parameter_count",dbvm_bind_parameter_count},
-    {"bind_parameter_name", dbvm_bind_parameter_name},
-
-    {"get_value",           dbvm_get_value          },
-    {"get_values",          dbvm_get_values         },
-    {"get_name",            dbvm_get_name           },
-    {"get_names",           dbvm_get_names          },
-    {"get_type",            dbvm_get_type           },
-    {"get_types",           dbvm_get_types          },
-    {"get_uvalues",         dbvm_get_uvalues        },
-    {"get_unames",          dbvm_get_unames         },
-    {"get_utypes",          dbvm_get_utypes         },
-
-    {"get_named_values",    dbvm_get_named_values   },
-    {"get_named_types",     dbvm_get_named_types    },
-
-    {"rows",                dbvm_rows               },
-    {"urows",               dbvm_urows              },
-    {"nrows",               dbvm_nrows              },
-
-    /* compatibility names (added by request) */
-    {"idata",               dbvm_get_values         },
-    {"inames",              dbvm_get_names          },
-    {"itypes",              dbvm_get_types          },
-    {"data",                dbvm_get_named_values   },
-    {"type",                dbvm_get_named_types    },
-
-    {"__tostring",          dbvm_tostring           },
-    {"__gc",                dbvm_gc                 },
-
-    { NULL, NULL }
-};
-
-static const luaL_Reg ctxlib[] = {
-    {"user_data",               lcontext_user_data              },
-
-    {"get_aggregate_data",      lcontext_get_aggregate_context  },
-    {"set_aggregate_data",      lcontext_set_aggregate_context  },
-    {"aggregate_count",         lcontext_aggregate_count        },
-
-    {"result",                  lcontext_result                 },
-    {"result_null",             lcontext_result_null            },
-    {"result_number",           lcontext_result_double          },
-    {"result_double",           lcontext_result_double          },
-    {"result_int",              lcontext_result_int             },
-    {"result_text",             lcontext_result_text            },
-    {"result_blob",             lcontext_result_blob            },
-    {"result_error",            lcontext_result_error           },
-
-    {"__tostring",              lcontext_tostring               },
-    {NULL, NULL}
-};
-
-static const luaL_Reg sqlitelib[] = {
-    {"version",         lsqlite_version         },
-    {"complete",        lsqlite_complete        },
-#ifndef WIN32
-    {"temp_directory",  lsqlite_temp_directory  },
-#endif
-    {"open",            lsqlite_open            },
-    {"open_memory",     lsqlite_open_memory     },
-
-    {"__newindex",      lsqlite_newindex        },
-    {NULL, NULL}
-};
-
-static void create_meta(lua_State *L, const char *name, const luaL_Reg *lib) {
-    luaL_newmetatable(L, name);
-    lua_pushstring(L, "__index");
-    lua_pushvalue(L, -2);               /* push metatable */
-    lua_rawset(L, -3);                  /* metatable.__index = metatable */
-
-    /* register metatable functions */
-    luaL_openlib(L, NULL, lib, 0);
-
-    /* remove metatable from stack */
-    lua_pop(L, 1);
-}
-
-LUALIB_API int luaopen_lsqlite3(lua_State *L) {
-    create_meta(L, sqlite_meta, dblib);
-    create_meta(L, sqlite_vm_meta, vmlib);
-    create_meta(L, sqlite_ctx_meta, ctxlib);
-
-    luaL_getmetatable(L, sqlite_ctx_meta);
-    sqlite_ctx_meta_ref = luaL_ref(L, LUA_REGISTRYINDEX);
-
-    /* register (local) sqlite metatable */
-    luaL_register(L, "sqlite3", sqlitelib);
-
-    {
-        int i = 0;
-        /* add constants to global table */
-        while (sqlite_constants[i].name) {
-            lua_pushstring(L, sqlite_constants[i].name);
-            lua_pushnumber(L, sqlite_constants[i].value);
-            lua_rawset(L, -3);
-            ++i;
-        }
-    }
-
-    /* set sqlite's metatable to itself - set as readonly (__newindex) */
-    lua_pushvalue(L, -1);
-    lua_setmetatable(L, -2);
-
-    return 1;
-}
-
-
-
-
-#ifdef __cplusplus
-}  // extern "C"
-#endif  // __cplusplus
-
-
-
-